Electric motion transmitting mechanism and controls for pressing machines



ELECTRIC MOTION TANSIITTING MECHANISM AND CONTROLS FOR PRESSING'IACHINESFilbd Oct. 11, 1929 2 Sheets-Sheet 1 Sept. 15, 1931. E DAVIS 1,823,488

INVENTOR.

ATTORNEYS Sept. 15, 1931. E. DAVIS 1,323,433 ELECTRIC IOTIONTRANSIITTING IECHANISI AND CONTROLS FOR PRESSING IACHINES Filed 001;.11, 1929 2- ShOOtS-ShBO 2 INVENTOR.

A TTORNEYfi Patented Sept. 15, 1931 UNITED STATES PATENT OFFICE ERNESTDAVIS, 01 SYRACUSE, NEW YORK, ASSIGNOR TO THE PROSPERITY COMPANY INC.,01 SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK ELECTRIC MOTIONTRANSMITTING MECHANISM AND CONTROLS FOR PRESSING MACHINES Applicationfiled October 11, 1929. Serial No. 398,965.

This invention relates to machines having an opening and closingmovement, as garment and laundry pressing machines, and has for itsobject, a particularly simple, efiicient and compact electric motoractuating mechanism for closing the press, and controls for saidactuating mechanism.

The invention consists in the novel features and in the combinations andconstructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanyingdrawings, in which like characters designate corresponding parts in allthe views.

Figure 1 is a side elevation, partly broken away, of a conventionalgarment or laundry press embodying my invention.

Figure 2 is a diagrammatic view of the actuating mechanism and thecontrols therefor.

I have here illustrated my invention as embodied in a conventional typeof garment or laundry press in which the cooperating pressing elementsare respectively, a buck 1 and a head 2 movable toward and from thebuck, the buck being mounted on a suitable bracket or bolster 3 which inturn is mounted upon a suitable frame 4; and the head being carried by alever 5 pivoted between its ends at 6 to an upright 7 rising from theframe 4.

The actuating mechanism comprises an electric motor and electricallyoperated motion transmitting means between the motor and the press head2.

8 designates the electric motor.

9 designates the electric motion transmitting mechanism, which we shallcall for convenience, a second motor. The second'motor includes arotating armature 10, the shaft 11 of which is connected to an armatureshaft 12 of the motor 8 in any suitable manner, as by a coupling 13.

14 is a casing which carries rotatable field coils 15 of the secondmotor 9, the casing 14 being connected to the head 2 by suitable motiontransmitting means.

The mot-ion transmitting means here illustrated, in addition to thelever 5, comprises a link 16 pivoted at one end at 17 to a radial arm 18on the casing 14, and at its other end at 19 to the rear arm of thelever 5. The press is opened when the second motor 9 is deenergized by acounterspring 20.

In the normal operation of the machine, when the press is open the motor8 is preferably constantly running and is connected in the feed circuit21 and 22 by a circuit including a wire 23, blade 24 of a double poleswitch, conductor 25, wire 26 which is connected to one of the terminalsof the motor 8, the motor 8, wire 27 connected to the other terminal,the other blade 28 of the double pole switch. and wire 29. The doublepole switch and also a cut-out snap switch 30 in the conductor 26 areclosed in the normal operation of the machine, so that power isconstantly supplied to the motor 8.

The second motor 9 is connected to the feed wires 21 and 22 through abranch circuit consisting of wire 23, blade 24 of the double poleswitch, wire 25, wire 31, switch 32, switch contact 33, wire 34, switch35, switch contact 36, wire 3?, brush 38, the armature and field coilsof the motor 9, brush 39, wire 40, wire 27 switch blade 28 of the doublepole switch, and wire 29. The switches 32 and 35 are normally open andare manually operable as by push buttons 41 and 42 connected to theswitches by links 43 and 44 respectively, these push buttons being actedupon by springs 45 and 46 which tend to open the switches 32 and 35 whenthe push buttons are released. Although two push buttons are shown,obviously, one ush button or one switch may be employed. lwo switchesare used connected in series in order that both hands of the operatormay be employed while the press is closing. The motor 9 is similar to atorque motor and may be shunt, series or compound wound.

Means is provided for holding the press closed when the push buttons 41and 42 are released, this means being controlled by the closing of thepress. This means as here shown comprises, a normally open tumblerswitch 47 in a shunt circuit around the switches 32, 35, this switchbeing operable by the motion transmitting means between the motor 9 andthe press head and so arranged as to be operated or closed when thepress reaches nearly closed position.

The switch 47 is here shown as mounted on the back leg of the frame andas having closed release switch 51 is provided, in the shunt circuit,having means as a spring 52 tending to close it and being operable intoopen position by a trip lever 53. The switch 51 is connected to a wire54 which is connected to the wire 37 and coacts with a contact 55 whichis connected by a wire 56 to the terminal 57 with which the switch 47coacts. The other terminal 58 of the switch 47 is connected by a wire 60to the wire 25. The switch 47 may be of any suitable form, size andconstruction.

In operation, upon depression of the push buttons 41 and 42, theswitches 32 and 35 are closed against the action of their returningsprings 45 and 46 so that the second motor 9 is energized and therotation of the armature shaft 12 of the motor 8 transmitted through thearmature and field of the motor 9 and link 16 to the press head carryinglever 5 to close the press. When the press app-roaches closed position,the motion transmitting link 16 throws the switch 47 to close the shuntcircuit around the switches 32 and 35 so that the circuit through thesecond motor 9 remains closed after the operator releases the pushbuttons 41 and 42 and the press remains closed as lon as desired underinfluence of the torque eveloped by the motor 8. To open the press, thetrip lever 53 is actuated to open the switch 35 and thus deenergize thesecond motor 9, whereupon the press opens under the influence of thecountersprings 20. The motor 9 acts as a magnetic clutch between themotor 8 and the motion transmitting means which connect with the movableressing element. When the armature and eld coils of the motor 9 aredeenergized the clutch is in effect released and the motor 8, which isconstantly supplied with energy will again rotate. The motor 8 is thuscontinuously rotating at all times except when the press is closed underpressure and this continuous operation provides the advantage that themotor possesses momentum which renders the operation of the press fasterwhen the armature and field coils of the second motor 9 are energized toclutch the motor 8 to the motion transmitting means.

What I claim is:

1. A pressing machine com rising cooperating pressing elements, one 0which is movable toward and from the other, actuating mechanismcomprising an electric motor and motion transmitting means between theelectric motor and the movable element including a second electric motorhaving a rotating armature and a rotatable field, the armature beingconnected to the rotor of the first motor to be actuated thereby, andmotion transmitting connections between the rotatable field and themovable element, an electric circuit having branches connected to themotors to energize the same, and a manually operable switch in thebranch connected to the second motor.

2. A pressing machine comprising-cooperating pressing elements, one ofwhich is movable toward and from the other, actuating mechanismcomprising an electric motor and motion transmitting means between theelectric motor-and the movable element including a second electric motorhaving a rotating armature and a rotatable field, the armature beingconnected to the rotor of the first motor to be actuated thereby, andmotion transmitting connections between the rotating field and themovable element, an electric circuit having branches connected to themotors to energize the same, a normally open, manually operable switchin the branch connected to the second motor, said switch having meanstending to open it when released, a normally open switch connected inshunt with the former switch in the branch connected to the second motorand having means tending to open it, means controlled by the closing ofthe press to close the switch in the shunt circuit, and a normallyclosed, manually operable switch in said shunt circuit.

3. A pressing machine comprising cooperating pressing elements, one ofwhich is movable toward and from the other, actuating mechanism forclosing the press, said actuating mechanism comprising an electric motorand motion transmitting means between the electric motor and the movableelement including a second electric motor having a rotating armature anda rotatable field, the armature being connected to the rotor of thefirst motor to be actuated thereby, and motion transmitting meansbetween the field and the movable press element, an electric circuithaving branches connected to the motors to actuate the same, and anormally open, manually operable switch in the branch connected to thesecond motor.

4. A pressing machine comprising cooperating pressing elements, one ofwhich is movable toward and from the other, actuating mechanism forclosing the press, said actuating mechanism comprising an electricmotor, and motion transmitting means between the electric motor and themovable element including a second electric motor having a rotatingarmature and a rotatable field, the

armature being connected to the rotor of the first motor to be actuatedthereby, and motion transmitting means between the field and the movablepress element, an electric circuit having branches connected to themotors to actuate the same, and a normally open, manually operableswitch in the branch connected to the second motor, a normally openswitch connected in shunt with the former switch and having meanstending to open it, and means operated by the press during the closingthereof for closing and holding closed the switch in the shunt circuit.

5. A pressing machine comprising cooperating p-ressin elements, one ofwhich is movable towar and from the other, actuating mechanism forclosing the press, said actuating mechanism comprising an electricmotor, and motion transmitting means between the electric motor and themovable element including a second electric motor havin a rotatingarmature and a rotatable field, the armature being connected to therotor of the first motor to be actuated thereby, and motion transmittingmeans between the field and the movable press element, an electriccircuit having branches connected to the motors to actuate the same, anda normally open, manually operable switch in the branch connected to thesecond motor, a normally open switch in shunt with the former switch andhaving means tending to open it, and means operated by the press duringthe closing thereof for closing and holding closed the switch in theshunt circuit, and a normally closed, manually operable release switchin the shunt circuit.

6. A pressing machine comprising cooperating pressing elements, one ofwhich is movable toward and from the other, actuating mechanism forclosing the press, said actuating mechanism comprising an electric motorand motion transmitting means between the electric motor and the movableelement including a second electric motor hav ing a rotating armatureand a rotatable field, the armature being connected to the rotor of thefirst motor to be actuated thereby, motion transmitting means betweenthe rotatable field and the movable pressing element, an electriccircuit having branches connected respectively to the motors, a manuallyoperable, normally open switch in the branch connected to the secondmotor having means tending to open it when released, and meanscontrolled by the closing of the press for closing the circuitindependently of said switch when the movable element approaches closedposition.

'7. A pressing machine comprising cooperating pressing elements, one ofwhich is movable toward and from the other, actuating mechanism forclosing the press, and means to open the press, the actuating mechanismcomprising an electric motor and motion transmitting means between theelectric motor and the movable element including a second electric motorhaving a rotating armature and a rotatable field, the armaturebeingbconnected to the rotor of the first motor to e actuated thereby,motion transmitting means between the rotatable field and the movablepressing element, an electric circuit having branches connectedrespectively to the motors, a manually operable, normally open switch inthe branch connected to the second motor having means tending to open itwhen released, and means controlled b the closing of the press forclosing the circuit independently of said switch when the movableelement approaches closed position, and a normally closed, manuallyoperable release switch in the circuit to the second motor.

8. A pressing machine comprising cooperating pressin elements, one ofwhich is movable toward and from the other, actuating mechanism forclosing the press, said actuating mechanism comprlsing an electric motorand motion transmitting means between the electric motor and the movableelement including a second electric motor having a rotating armature anda rotatable field, the armature being connected to the rotor of thefirst motor to be actuated thereby, connections between the rotatablefield and the movable element, an electric circuit having branchesconnected to the motors to actuate the same, and a pair of manuallyoperable control switches in the circuit in the branch connected to thesecond motor.

9. A pressing machine comprising cooperating pressing elements, one ofwhich is movable toward and from the other, actuating mechanism forclosing the press, means to open the press, the actuating mechanismcomprising an electric motor and motion transmitting means between theelectric motor and the movable element including a second electric motorhaving a rotating armature and a rotatable field, the armature beingconnected to the rotor of the first motor to be actuated thereby,connections between the rotatable field and the movable element, anelectric circuit having branches connected to the motors to actuate thesame, and a pair of manually operable control switches in the circuit inthe branch connected to the second motor, and means connected in thebranch connected to the second motor for holding the circuit closed tothe second motor when said switches are opened, said means beingcontrolled by the closing of the press.

10. A pressing machine comprising cooperating pressing elements, one ofwhich is movable toward and from the other, actuating mechanism forclosing the press, means to open the press, the actuating mechanismcomprising an electric motor and motion transmitting means between theelectric motor and the movable element including a sec- 0nd electricmotor having a rotating armature and a rotatable field, the armaturebeing connected to the rotor of the lirst motor to be actuated thereby,connections between the rotatable field and the movable element, anelectric circuit having branches connected to the motors to actuate thesame, and a pair of manually operable control switches in the circuit inthe branch connected to the second motor, and means connected in thebranch connectcdto the second motor for holding the circuit closed tothe second motor when said switches are opened, said means beingcontrolled by the closing of the press, and a normally closed releaseswitch having means tending to close it connected in the branch to thesecond motor.

11. In a garment or laundry pressingmachine cooperative pressingelements, one of which is movable toward and from the other; actuatingmechanism comprising an electric motor and motion transmitting meansbetween the electric motor and the movable element including a secondelectric motor having a rotatable armature and a rotatable field,

one of which is connected-to the rotor of the first motor to be actuatedthereby, and the other of which is connected by motion transmittingmeans to the movable element; an electric circuit having branchesconnected to the motors toenergize the same; and a manually operableswitch in the branch connected to the second motor.

12. In a garment or laundry pressing machine cooperative pressingelements, one of which is movable toward and from the other; actuatingmechanism for closing the press, said actuating mechanism comprising anelectric motor and motion transmitting means between the electric motorand the movable element including a second electric motor having arotatable armature and a rotatable field, one of which is connected tothe rotor of the first motor to be actuated thereby, and the other ofwhich is connected by motion transmitting means to the movable pressingelement; an electric circuit having branches connected to the motors tosupply energy thereto; and a normally open, manually operable, switch inthe branch connected to the second motor.

13. In a garment or laundry pressing machine cooperative pressingelements, one of which is movable toward and from the other; actuatingmechanism for closing the press, said actuating mechanism comprising anelectric motor and motion transmitting means between the electric motorand the movable element including a second electric motor having arotatable armature and a rotatable field, one of which is connected tothe rotor of the first motor to be actuated thereby, and the other ofwhich is connected by motion transmitting means to the movable pressingelement; an electric circuit having branches connected respectviely tothe motors; a manually operable, normally open, switch in the branchconnected to the second motor, and means tending to open said switchwhen released; and means controlled by the closing of the press forclosing a circuit independ ently of said switch when the movable elementapproaches closed position.

14. In a garment or laundry pressing machine cooperative pressingelements, one of which is movable toward and from the other; actuatingmechanism for closing the press, said actuating mechanism comprising anelectric motor and motion transmitting means between the electric motorand the movable element including a second electric motor having arotatable armature and a rotatable field, one of which is connected tothe rotor of the first motor to be actuated thereby, and the other ofwhich is connected by motion transmitting means to the movable pressingelement; an electric circuit having branches connected to the motors tosupply energy thereto; and a pair of manually operable control switchesin the branch circuit connected to the second motor.

In testimony whereof, I have hereunto signed my name, at Syracuse, inthe county of Onondaga, and State of New York, this 4th day of October,1929.

ERNEST DAVIS.

